Burnham’s vow to end Labour briefing wars will test his grip on the party

Tensions between his aims are already there, including disputes over key appointments such as chancellor

Andy Burnham’s vision for cleaning up Westminster politics is a utopian one: ending the dominance of the whipping system, Whitehall power hoarding and the “insidious briefing culture” of the bubble.

In his first speech on becoming Labour leader, he warned his party it “won’t beat Britain’s new right if we are consumed by infighting and pulling in different directions”.